Knockbox

What is a knockbox and what is it for

A knockbox is a container for knocking out used coffee grounds from a filter or portafilter. It consists of a sturdy container and a metal bar across it, against which the grounds are knocked out in one motion, without spilling over the work surface.

When the part stops doing its job

• A knocked out or loose bar that wobbles or falls out of its mount on impact
• Dents and cracks in the body of the container that impair tightness or stability
• Damaged rubber insert on the bar, causing a louder impact and faster wear of the portafilter
• Corroded or stained surface despite regular cleaning

Why timely replacement pays off

A damaged knockbox increases the risk of scratching or deforming the rim of the portafilter with every knock-out and reduces safety when working at the counter. A loose bar can fall off completely on a stronger impact, slowing down preparation and increasing mess around the espresso machine.

How to choose a replacement

When choosing, consider the size of the container relative to the counter space and the way it will be used during operation. Check the exact dimensions and shape in the compatibility table on the product page.